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Heat wave to intensify as all-time March records fall across the West. See how hot it will get. Chevron right

O'Fallon, IL

73°F
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O'Fallon

Illinois

73°
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O'Fallon, IL Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

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Winter Center
Today Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities
Thursday, March 19

Current Weather

6:46 PM

73°F
Sunny
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
RealFeel Shade™ 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
RealFeel®
71°
RealFeel Shade™
71°
Max UV Index
0.0 (Low)
Wind
SSE 6 mph
Wind Gusts
11 mph
Humidity
42%
Indoor Humidity
42% (Ideal Humidity)
Dew Point
48° F
Pressure
↓ 29.96 in
Cloud Cover
0%
Visibility
27 mi
Cloud Ceiling
40000 ft

Day

3/19
77°Hi
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
RealFeel Shade™ 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Sunny to partly cloudy and very warm

Max UV Index5.0 (Moderate)

AccuLumen Brightness Index™8 (Bright)

WindS 6 mph

Wind Gusts15 mph

Probability of Precipitation0%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover24%

Morning

Afternoon

Night

3/19
48°Lo
RealFeel® 47°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
Clear

WindS 5 mph

Wind Gusts7 mph

Probability of Precipitation1%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover9%

Evening

Overnight

Sun & Moon

12 hrs 06 mins
Rise 7:05 AM
Set 7:11 PM
Waxing Crescent
Rise 7:13 AM
Set 8:14 PM

Temperature History

3/19
High
Low
Forecast
77°
48°
Average
60°
36°
Last Year
77°
43°
Record
N/A
11°
1965

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World North America United States Illinois O'Fallon

Weather Near O'Fallon:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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